Efficient Ni–Mo hydrodesulfurization catalyst prepared through Keggin polyoxometalate



Alsalme, A, Alzaqri, N, Alsaleh, A, Siddiqui, MRH, Alotaibi, Abdullah, Kozhevnikova, Elena and Kozhevnikov, Ivan ORCID: 0000-0003-2453-5256
(2016) Efficient Ni–Mo hydrodesulfurization catalyst prepared through Keggin polyoxometalate. Applied Catalysis B Environmental, 182. 102 - 108.

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Abstract

NiMo/SiO2 hydrodesulfurization catalyst prepared through the polyoxometalate route using Keggin type phosphomolybdates has high activity in HDS of thiophene at 350–400 °C and 1 bar pressure. The NiMo/SiO2 pre-catalyst retains intact Keggin structure of phosphomolybdic polyoxometalate, which transforms on stream into a NiMo sulfidic active phase. The pre-catalyst also possesses Brønsted and Lewis acidity, which is lost during the HDS reaction. This catalyst undergoes faster sulfidation and shows higher thiophene conversion and higher butene selectivity than conventional industrial NiMo/Al2O3 catalyst with similar Mo loading. The polyoxometalate catalyst preparation route is therefore considered to be a performance enhancement methodology for HDS catalysis.

Item Type: Article
Uncontrolled Keywords: Hydrodesulfurization, Thiophene, Polyoxometalates, Ni-Mo catalyst
Depositing User: Symplectic Admin
Date Deposited: 29 Oct 2015 09:58
Last Modified: 21 Apr 2021 16:13
DOI: 10.1016/j.apcatb.2015.09.018
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/2034162